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Observation of a phase transition in an electrodynamically levitated NH 4 NO 3 microparticle by Mie and Raman scattering
Author(s) -
Musick J.,
Popp J.,
Kiefer W.
Publication year - 2000
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/(sici)1097-4555(200003)31:3<217::aid-jrs517>3.0.co;2-s
Subject(s) - levitation , raman spectroscopy , microparticle , mie scattering , raman scattering , particle (ecology) , phase transition , refractive index , radius , analytical chemistry (journal) , materials science , phase (matter) , optics , molecular physics , chemistry , light scattering , scattering , physics , chromatography , condensed matter physics , organic chemistry , oceanography , computer security , quantum mechanics , computer science , magnet , geology
The observation of a phase transition from a solid microparticle into a liquid droplet of a single levitated NH 4 NO 3 particle using an electrodynamic balance for particle levitation combined with Raman and Mie spectrospcopy is reported. The phase transition from the solid to the dissolved NH 4 NO 3 can be followed by characteristic changes in the spectral location of Raman signals and by a characteristic decrease in the refractive index and an increase in the particle radius, which is deduced from Mie scattering data. Copyright © 2000 John Wiley & Sons, Ltd.